package com.mycode.netty;

import io.netty.buffer.ByteBufAllocator;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInboundHandlerAdapter;
import io.netty.channel.ChannelOutboundHandlerAdapter;
import io.netty.channel.ChannelPromise;
import io.netty.channel.embedded.EmbeddedChannel;
import lombok.extern.slf4j.Slf4j;

import java.nio.charset.StandardCharsets;

/**
 * @auther yuanpengtao
 * @email 1294776572@qq.com
 * @data 2024/4/10 22:48
 */
@Slf4j
public class TestEmbeddedChannel {

    public static void main(String[] args) {

        ChannelInboundHandlerAdapter h1 = new ChannelInboundHandlerAdapter() {
            @Override
            public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
                log.debug("h1");
                super.channelRead(ctx, msg);
            }
        };

        ChannelInboundHandlerAdapter h2 = new ChannelInboundHandlerAdapter() {
            @Override
            public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
                log.debug("h2");
                super.channelRead(ctx, msg);
            }
        };

        ChannelOutboundHandlerAdapter h3 = new ChannelOutboundHandlerAdapter() {
            @Override
            public void write(ChannelHandlerContext ctx, Object msg, ChannelPromise promise) throws Exception {
                log.debug("h3");
                super.write(ctx, msg, promise);
            }
        };

        ChannelOutboundHandlerAdapter h4 = new ChannelOutboundHandlerAdapter() {
            @Override
            public void write(ChannelHandlerContext ctx, Object msg, ChannelPromise promise) throws Exception {
                log.debug("h4");
                super.write(ctx, msg, promise);
            }
        };

        EmbeddedChannel channel = new EmbeddedChannel(h1, h2, h3, h4);
        // 模拟入站操作
        channel.writeInbound(ByteBufAllocator.DEFAULT.buffer().writeBytes("hello".getBytes(StandardCharsets.UTF_8)));

        log.debug("----------------");

        // 模拟出站操作
        channel.writeOutbound(ByteBufAllocator.DEFAULT.buffer().writeBytes("hello".getBytes(StandardCharsets.UTF_8)));

    }

}
